JT Twinstar sprockets are made from a combination of durable steel and lightweight aluminum.
The inner circle of the special aluminum alloy has a strength approximately 11 times that of pure aluminum, thus almost reaching the strength of steel.
The chain itself runs on the steel sprocket. The result is the perfect combination of weight savings and increased uptime.
Experience shows that JT Twinstar sprockets last about three times longer than pure aluminum and are 50% lighter than steel.
JT Twinstar sprockets are among the highest quality and most technically advanced sprockets in the world. DIVISION: 520 INSIDE DIAMETER: 63MM CIRCLE SIZE: 110 MM HOLE: 8.5MM HOLES QUANTITY: 6 SCREW TYPE: FLAT HEAD QTY TEETH: 45 CROWN TYPE: TWINSTAR